The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Nov. 29, 2016
Filed:
Sep. 22, 2014
Applicant:
Schott Ag, Mainz, DE;
Inventors:
Volker Hagemann, Klein-Winternheim, DE;
Bernd Woelfing, Mainz, DE;
Assignee:
SCHOTT AG, Mainz, DE;
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
F21V 9/16 (2006.01); F21V 9/08 (2006.01); C09K 11/77 (2006.01); F21V 13/08 (2006.01); F21S 8/10 (2006.01);
U.S. Cl.
CPC ...
F21V 9/08 (2013.01); C09K 11/7774 (2013.01); F21V 13/08 (2013.01); F21S 48/10 (2013.01); Y02B 20/181 (2013.01);
Abstract
An illumination device for generating white light is provided. The device includes a converter and a filter. The converter has a Ce:YAG ceramic, which converts blue excitation light into yellow light of a color location near the white point in the chromaticity diagram. The filter attenuates a light fraction below 530 nm so as to obtain the white light.